Synthesis, and measurement of structural and magnetic properties, of La_(1-x)Na_xFeO_3(0.0≤x≤0.3) perovskite oxides

Polycrystalline La_(1-x)Na_xFeO_3 (0.0≤x≤0.3) solid solutions were synthesized by a solution combustion method using glycine as a fuel. The combustion synthesized compounds were characterized by powder X-ray diffraction (XRD), scanning electron microscopy (SEM),diffused reflectance (DR) in the UV-vis, and magnetic measurements. The crystal structure examined by X-ray powder diffraction indicated that the samples were single phase and crystallized in an orthorhombic (space group, Pbnm no.62) structure. The parent and so-dium-substituted compounds showed canted anti-ferromagnetic behavior associated with an increase in magnetic moment as Na content in-creased. The changes in magnetic properties of the materials were correlated to the changes in structural features, as shown by Rietveld structural refinement of the materials.